Cryobiological vessel



FIG. 1 is a side elevation, partially in section, of the cryobiological vessel, showing our new design;

FIG. 2 is a side elevation thereof;

FIG. 3 is a front elevation of the vessel;

FIG. 4 is a rear elevation of the vessel;

FIG. 5 is a top plan view of the vessel; and

FIG. 6 is a bottom plan view of the vessel. 

The ornamental design for a cryobiological vessel, as shown. 